US3356959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide band transistor video signal amplifier
Assignee: RCA Corp
•
Filing: 1965-05-13
•
Granted: 1967-12-05
•
Expires: 1985-05-13
Abstract
No abstract record available.
Inventors
- 👤 Benjamin S Vilkomerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:45
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/148; H03; H03F; H03F1/00; H03F1/42; H03F1/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A VIDEO SIGNAL AMPLIFIER HAVING SUBSTANTIALL EQUAL RESPONSE FOR ALL VIDEO SIGNAL FREQUENCIES FOR DRIVING A TRANSMISSION LINE HAVING AN INPUT TERMINAL FOR CONVEYING SAID VIDEO SIGNAL TO UTILIZATION APPARATUS, COMPRISING IN COMBINATION: A PAIR OF TRANSISTORS HAVING INPUT AND OUTPUT ELECTRODES AND A COMMON INPUT-OUTPUT ELECTRODE; SAID TRANSISTORS BEING INTERCONNECTED SO THAT SIGNALS DERIVED FROM SAID OUTPUT ELECTRODE ARE OF OPPOSITE PHASE TO SIGNALS APPLIED TO SAID INPUT ELECTRODE; MEANS FOR IMPRESSING UPON THE INPUT ELECTRODE OF SAID TRANSISTOR PAIR A VIDEO SIDNAL HAVING A RELATIVELY WIDE RANGE OF FREQUENCY COMPONENTS; AN OUTPUT COUPLING CAPACITOR HAVING AN INPUT TERMINAL CONNECTED TO SAID TRANSISTOR PAIR OUTPUT ELECTRODE AND AN OUTPUT TERMINAL COUPLED TO SAID TRANSMISSION LINE; A NEGATIVE FEEDBACK CIRCUIT BETWEEN THE OUTPUT AND INPUT ELECTRODES OF SAID TRANSISTOR PAIR; SAID CIRCUIT INCLUDING A FEEDBACK TRANSISTOR HAVING INPUT AND OUTPUT ELECTRODES; DC AND AC MEANS RESPECTIVELY COUPLING THE OUTPUT ELECTRODE OF SAID TRANSISTOR PAIR AND THE OUTPUT TERMINAL OF SAID COUPLING CAPACITOR TO SAID FEEDBACK TRANSISTOR INPUT ELECTRODE; AND MEANS COUPLING SAID FEEDBACK TRANSISTOR OUTPUT ELECTRODE TO SAID TRANSISTOR PAIR INPUT ELECTRODE.
Claim 2
Dependent Claim
182 words
A VIDEO SIGNAL AMPLIFIER HAVING SUBSTANTIALL EQUAL RESPONSE FOR ALL VIDEO SIGNAL FREQUENCIES FOR DRIVING A TRANSMISSION LINE HAVING AN INPUT TERMINAL FOR CONVEYING SAID VIDEO SIGNAL TO UTILIZATION APPARATUS, COMPRISING IN COMBINATION: A PAIR OF TRANSISTORS HAVING INPUT AND OUTPUT ELECTRODES AND A COMMON INPUT-OUTPUT ELECTRODE; SAID TRANSISTORS BEING INTERCONNECTED SO THAT SIGNALS DERIVED FROM SAID OUTPUT ELECTRODE ARE OF OPPOSITE PHASE TO SIGNALS APPLIED TO SAID INPUT ELECTRODE; MEANS FOR IMPRESSING UPON THE INPUT ELECTRODE OF SAID TRANSISTOR PAIR A VIDEO SIDNAL HAVING A RELATIVELY WIDE RANGE OF FREQUENCY COMPONENTS; AN OUTPUT COUPLING CAPACITOR HAVING AN INPUT TERMINAL CONNECTED TO SAID TRANSISTOR PAIR OUTPUT ELECTRODE AND AN OUTPUT TERMINAL COUPLED TO SAID TRANSMISSION LINE; A NEGATIVE FEEDBACK CIRCUIT BETWEEN THE OUTPUT AND INPUT ELECTRODES OF SAID TRANSISTOR PAIR; SAID CIRCUIT INCLUDING A FEEDBACK TRANSISTOR HAVING INPUT AND OUTPUT ELECTRODES; DC AND AC MEANS RESPECTIVELY COUPLING THE OUTPUT ELECTRODE OF SAID TRANSISTOR PAIR AND THE OUTPUT TERMINAL OF SAID COUPLING CAPACITOR TO SAID FEEDBACK TRANSISTOR INPUT ELECTRODE; AND MEANS COUPLING SAID FEEDBACK TRANSISTOR OUTPUT ELECTRODE TO SAID TRANSISTOR PAIR INPUT ELECTRODE.
References Cited (Backward Citations)
US3073968A
Cited
US3260950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |